During my childhood, my father's most of the income went into repaying loans. Luckily, we had our own house, so we didn't need to worry about getting homeless. But I remember I rarely got to spend money on any kind of "luxury". By luxury, I mean simple stuff like a icecream cone or a baloon.

The effect it had on me is quite wierd. On one hand, I always wish to earn more so as to not have to go through that phase again, while on the other hand, I never care about spending money. Even now that we have more money, I rarely spend on clothes, fancy food, gadgets or whatever that is not necessity. That phase of borderline poverty has made me frugal for life.